How to: Change the Working Folder Location
Sometimes Solution Explorer indicates folder locations marked by wavy underlines. These entries represent invalid paths relative to your working folder. To correct invalid paths, you must change the working folder location.
To change the working folder location
In Visual Studio, open Solution Explorer.
Click an invalid path in the Enter Working Copy Location Here column.
Click the ellipsis (…) button.
Type a valid path, for example, http://<local host>/folder1, and click OK. If the folder does not already exist, Visual Studio creates one.